Diamond Inclusions: What's Acceptable and What's Not
Inclusions are natural imperfections inside diamonds. Understanding what's acceptable can save you thousands while still getting a beautiful stone. Here's your practical guide to diamond clarity.
What Are Inclusions?
Inclusions are internal characteristics formed during the diamond's growth deep within the Earth. Common types include:
- Crystals: Tiny minerals trapped inside the diamond
- Feathers: Small fractures that look like feathers
- Clouds: Groups of tiny inclusions that create a hazy area
- Needles: Thin, needle-like inclusions
- Knots: crystals that reach the diamond's surface
Clarity Grades Explained
- FL (Flawless): No inclusions or blemishes visible under 10x magnification. Extremely rare and expensive.
- IF (Internally Flawless): No internal inclusions, minor surface blemishes. Very rare.
- VVS1-VVS2 (Very Very Slightly Included): Inclusions difficult to see under 10x magnification. Excellent quality.
- VS1-VS2 (Very Slightly Included): Minor inclusions, difficult to see under 10x. Great value.
- SI1-SI2 (Slightly Included): Noticeable under 10x, usually not visible to naked eye. Best value range.
- I1-I2 (Included): Visible to naked eye, may affect brilliance. Budget option.
What's Acceptable?
For most buyers, VS2-SI1 is the sweet spot. Here's why:
- Inclusions are not visible to the naked eye
- Significant savings compared to higher grades
- The diamond looks just as beautiful in a setting
- The money saved can go toward a better cut or larger size
When to Go Higher
- Center stones over 1.5ct (inclusions become more visible)
- Step cuts (emerald, asscher) that show inclusions more
- If you plan to resell (higher clarity retains value better)
- If "perfection" matters to you emotionally
When Lower Is Fine
- Accent stones (they're too small to see inclusions)
- Brilliant cuts (sparkle hides inclusions well)
- Small center stones under 1ct
- If budget is the priority
Inclusion Location Matters
- Center (table): Most visible — aim for VS2 or better
- Edge (girdle): May be hidden by setting — SI1 is often fine
- Under prongs: Often hidden — SI1-SI2 can work
Red Flags
- Black carbon spots in the center of the table
- Large clouds that affect transparency
- Chips or cavities near the surface
- Inclusions that weaken the diamond's structure
Our Recommendation
For a round brilliant: VS2-SI1 for center stone, SI2-I1 for accents. For step cuts: VS1-VS2 minimum. Always check the certificate and ask for photos.
Every diamond at Lara Jewels comes with a detailed clarity report so you know exactly what you're getting.
